When the Agonizer returned, accompanied by the Star Destroyers Retaliator and Master Stroke and numerous smaller warships, the New Republic Star Destroyer Allegiance had been reinforced by the Mon Calamari Star CruiserMon Casima and its own array of cruisers and frigates. In addition, three "flightknives" of Adumari Blade-32 fighters had deployed in space to join the battle, and false news reports were broadcast to give the impression that Adumar was still fighting a civil war. As a result, the Imperial forces sent a large number of their fighters, including most of their TIE/sa bombers, down to the surface to crush the disorganized Adumari forces and install Cartann's perator as a puppet ruler of the planet. These fighters were taken by surprise by the united Adumari forces, and suffered severe losses.

In space, the New Republic's X-wings, A-wings, and shield-equipped TIE/LN starfighters engaged the enemy starfighters, while the Y-wings and Blade-32s carried out coordinated concussion missile and proton torpedo attacks against the Agonizer. The B-wings split their duty between attacking the Agonizer and supporting the more agile but less powerful New Republic fighters against the enemy TIEs. The New Republic's capital ships focused their attention of the Master Stroke. While the fighters took fairly heavy losses, especially at the hands of a flight of four TIE/D Defenders, the Imperials lost even more fighters, and finally chose to withdraw after the Agonizer and Master Stroke lost their shields and began taking heavy damage. General Antilles shot down one TIE Defender during the battle, and severely damaged another during a one-on-one dogfight with GeneralTurr Phennir.

With the Imperial fleet's fighter screen in disarray and with their Star Destroyers taking heavy damage from the New Republic reinforcements and Adumari flightknives, the order to withdraw was given. The Imperial ships attempted to recover fighters then made the jump to hyperspace, leaving the Adumari Union to formally join the New Republic.

↑The Battle of Orinda—which occurs a month before Nam Chorios, according to the New Essential Chronology—occurs in 12 ABY. The only way for Orinda to occur in 12 ABY and Nam Chorios in 13 ABY is if Nam Chorios was within a month of the division between the years, or 48:3; and Orinda must occur in 48:2, a month earlier.